268775286 has 64 divisors (see below), whose sum is σ = 607606272. Its totient is φ = 78642432.

The previous prime is 268775279. The next prime is 268775293. The reversal of 268775286 is 682577862.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (268775279) and next prime (268775293).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417681 + ... + 418323.

It is an arithmetic number, because the mean of its divisors is an integer number (9493848).

Almost surely, 2^268775286 is an apocalyptic number.

268775286 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 268775286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303803136).

268775286 is an abundant number, since it is smaller than the sum of its proper divisors (338830986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268775286 is a wasteful number, since it uses less digits than its factorization.

268775286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its digits is 2257920, while the sum is 51.

The square root of 268775286 is about 16394.3675083853. The cubic root of 268775286 is about 645.3516788971.

The spelling of 268775286 in words is "two hundred sixty-eight million, seven hundred seventy-five thousand, two hundred eighty-six".